﹣2的4次方-2分之1×[5-(﹣3)2次方]= ﹣9÷3+(2分之1-3分之1)+3的2次方=

2024-10-28 23:36:04
推荐回答(2个)
回答1:

﹣2的4次方-2分之1×[5-(﹣3)2次方]
=-16-1/2×(5-9)
=-16-1/2×(-4)
=-16+2
=-14

﹣9÷3+(2分之1-3分之1)+3的2次方
=-3+1/6+9
=6+1/6
=37/6

4a²-3b²+2ab-4a²-b²
=(4a²-4a²)+2ab-(3b²+b²)
=2ab-4b²

3-(﹣ab+2a)-4(3a-ab)
=3+ab-2a-12a+4ab
=(ab+4ab)-(2a+12a)+3
=5ab-14a+3

回答2:

﹣2的4次方-1/2×[5-(﹣3)2次方]
=16-1/2×(5-9)
=16-1/2×(-4)
=16+2
=18

﹣9÷3+(1/2-1/3)+3的2次方
=-3+1/6+9
=6+1/6
=37/6

4a²-3b²+2ab-4a²-b²
=(4a²-4a²)+2ab-(3b²+b²)
=2ab-4b²

3-(﹣ab+2a)-4(3a-ab)
=3+ab-2a-12a+4ab
=(ab+4ab)-(2a+12a)+3
=5ab-14a+3